Difference between Skyline and Stagea RB25DET

[HKS34R]

Hi guys,

I have my eye on a front cut from a 2000 stagea and would like some information regarding the difference between the RB25DETs in them and the ones found in R34s.

I have been told that because they are auto, they have less power. Is that just a simple tuning problem cos they're auto?? Or is there more to it??

How hard are they RB25DETs out of the stagea's to transplant into a manual R34?? I know that you need to change the sump and oil pickup, and that the loom is different. Can anyone expand on this?? Is there an easy way to get around these problems??

Thanks in advance,

Brett

[BoyWhoCriedWolf]

Hey Brett,

The RB25det in the R34 Skyline is the NEO version, VVT type. I have a 97 mod staj with the r33 type 25 motor. The reason that they are not as quick is a simple weight issue. The Staj is a bit of a porker carrying 1650kg dry. How much is fcut?? Are you trying to change the R34 into a 4wd?? Big job!

Cheers m8,

Ken

[HKS34R]

The front cut also has the NEO version of the RB25DET. I am looking to transplant this into my RWD R34 and need to know of any hassles before hand, so that I can deal with them quickly and get my car on the road ASAP.

I know that to transform the cut from AWD to RWD, you need to change the sump and pickup, but other than that I have not been able to source any other information. Any ideas??

Anyone?? :confused:

[Serious-Seven]

ask troy ( ylwgtr2 ) he knows all about this stuff :wassup:

[HKS34R]

Thanks, will do. Much appreciated.

[specialk]

i have a stagea engine in my r33 gts4 and it is exactly the same as a rb25det, except that the sump you will have to change because of the 4wd drivetrain in the stageas',loom you can get away with the standard one because i think the stagea loom has the fwd linked into it. im actually taking my stagea engine out and selling it if you interested, because im putting a rb25det in so ill swap the sump myself... pm me if your interested

[HKS34R]

Thanks specialk,

I already have a stagea engine (Neo RB25DET) that is going in on Wednesday. Thanks for the info on the loom, too. I have heard that it shouldn't be a hard swap, but needed to know if there was any major differences i.e incompatible wiring harnesses etc.

What was your reason for swapping from the Stagea RB25DET to another RB25DET??

[specialk]

i work with boostd (the one who's car got written off) and we are throwing his engine into my car. just had more work done to it.

[Cubes]

Isn't the neo still VCT? Variable cam timing. Not variable valve timing (VVT).

I think VVT is a Toyota name for their setup?

[SafT]

i work with boostd (the one who's car got written off) and we are throwing his engine into my car. just had more work done to it.

you are converting your car to RWD? or was his a 4wd rb25det as well?

as far as im aware, the 2wd sump will bolt onto the 4wd block, but not the reverse

[specialk]

i guess ill find out the hard way...

[HKS34R]

Yes. Apparently the 2WD sump bolts onto the 4WD engine but not the other way around. I hope so cos I need to transform the stagea cut from 4WD to RWD.

Does anyone know what differences there are in the wiring harnesses for the stagea RB25DET and the R34?? As much info as possible would be great!!

[specialk]

is that because the pick up in a rb25det is at the back compared to the front...?

[SafT]

is that because the pick up in a rb25det is at the back compared to the front...?

the 2wd uses a different set of "bolt holes" in the block for attaching the sump

the 4wd block has 2 sets(to suit 4 and 2), the 2wd only has the holes it needs (i think)

[Sydneykid]

the 2wd uses a different set of "bolt holes" in the block for attaching the sump

the 4wd block has 2 sets(to suit 4 and 2), the 2wd only has the holes it needs (i think)

Correct

[specialk]

just out of interest.. can you fit a 4wd sump on a rb30 block?... cheers

[Sydneykid]

just out of interest.. can you fit a 4wd sump on a rb30 block?... cheers

You need an adaptor.

[specialk]

how much is adaptor worth... cheers

[blind_elk]

Seems like a waste of a perfectly good 4WD engine. They are hard enough to come by at the best of times , without ppl converting them to RWD only. I just transplanted one into my R32 GTS4, because it's the only upgrade (short of a 26).

Why not let some poor soul with a R33 GTS4 use it for his upgrade? You can use any RB25DET in a GTS / GTSt.